Long period of time without rain

Outbreak of infectious disease

Warm, moist air mixes with cool dry air

Massive amounts of snow that slide downhill

Movement of rock, debris, or earth downhill

Negative charge of electricity and positive charge of rain meet inside the cloud and electricity is sparked

Uncontrollable fire that occurs in wild land areas

Form above oceans with warm water

Natural way for Earth to release stress

Overflow of water onto land

Pressure build up under the crust

Earthquakes under the Ocean cause this natural disaster.